diff --git a/tests/test_connection.py b/tests/test_connection.py
index d16504f..4ea73a5 100644
--- a/tests/test_connection.py
+++ b/tests/test_connection.py
@@ -443,7 +443,7 @@ async def test_handshake_exception_before_accept() -> None:
     async def handler(request):
         raise ValueError()
 
-    with pytest.raises((BaseExceptionGroup, ValueError)) as exc:
+    with pytest.raises((BaseExceptionGroup, ValueError)) as exc:  # pylint: disable=possibly-used-before-assignment
         async with trio.open_nursery() as nursery:
             server = await nursery.start(serve_websocket, handler, HOST, 0,
                 None)
diff --git a/trio_websocket/_impl.py b/trio_websocket/_impl.py
index 698948a..a708b76 100644
--- a/trio_websocket/_impl.py
+++ b/trio_websocket/_impl.py
@@ -77,7 +77,7 @@ def __exit__(self, ty, value, tb):
 
         if _TRIO_MULTI_ERROR:  # pragma: no cover
             filtered_exception = trio.MultiError.filter(_ignore_cancel, value)  # pylint: disable=no-member
-        elif isinstance(value, BaseExceptionGroup):
+        elif isinstance(value, BaseExceptionGroup):  # pylint: disable=possibly-used-before-assignment
             filtered_exception = value.subgroup(lambda exc: not isinstance(exc, trio.Cancelled))
         else:
             filtered_exception = _ignore_cancel(value)